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Physical layout automation is very important in VLSI’s field. With the advancement of semiconductor technology, VLSI is coming to VDSM (Very Deep Sub Micrometer), and the scale of the random logic IC circuits goes towards million gates. Physical design is the process of determining the physical location of active devices and interconnecting them inside the boundary of the VLSI chip.The earliest and the most critical stage in VLSI layout design is the placement. The background is the rectangle... Topics: Placement problems, Memetic algorithm, wire length minimization, area minimization.